Four 1-50 V AA batteries in Series an are used to power a transistor radio - If the batteris Can move a charge of 220c, how long will They last if the radio has a resistance of 200. Lanswer should be in hour).
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- What magnitude of current (in A) will flow in a 8 Q resistor if the potential difference across it is 32 V?Calculate the axoplasm resistance for a neuron of length 0.06 m and a radius of 5 um. The axoplasm resistivity is 2.0 Ohm.m. Give your answer in MOhms(I) A 650Ω and an 1800Ω resistor are connected in serieswith a 12-V battery. What is the voltage across the 1800Ωresistor?
- A 450-2 resistor is connected to a variable-voltage power supply. (a) What voltage is necessary to cause a current of 0.9 A in the resistor? (b) What current flows in the resistor when the voltage is 14 V? A.A 140-N resistor is connected to a variable-voltage power supply. (a) What voltage is necessary to cause a current of 0.5 A in the resistor? V (b) What curTent flows in the resistor when the voltage is 15 V? A(11) A 500μF capacitor is charged to a potential of 100V. If the capacitor discharged through a resistance of 5x100, what is the maximum current through the discharging (in A). A) 0.5x10-³ D) 2x10 ³ (13) 10 Boot B) 1x10 ³ E) 25 C) 20
- A 120 V house circuit fused for 25 A has operating on it the following: two 75 W bulbs, a 1500 W heater, a 20 W radio, a1.5 W clock. (a) How large a current is required? (b)Will the fuse blow if a second electric heater rated at 1500 W is plugged into it?Four AA batteries of -1.5 V in series are used to give power to a transistor radio. If the batteries can provide a full charge of 240 C, how long will they last if the radio has a resistance of R=200 22?A 20-Ω resistor is connected to four 1.5-V batteries. What is the joule heat loss per minute in the resistor if the batteries are connected … (a) in series and … (b) in parallel?
- You have a capacitor that's discharging through a resistor toward zero voltage. What fraction of the inital voltage will the capacitor have after time 2RC?A 120 V potential difference is applied to a space heater that dissipates 500 W during operation. (a) What is its resistance during operation? (b) At what rate do electrons flow through any cross section of the heater element?Problem 3: A 1.2 g wire has a density of 2.7 g/cm3 and a resistivity of 2.7 × 10−8 Ωm. The wire has a resistance of 15 Ω. a) How long is the wire? b) The wire is made up of atoms with valence 1 and molar mass 26.98 g/mol. What is the drift speed of the electrons when there is a voltage drop of 30 V across the wire?